This feature apparently needs a rewrite from scratch with some simple syntax tricks explained on the search page itself. Notably about 99% of my searches are about meta-stuff (here covered by an external Google search, folks obviously know what's good and what's hopeless.) Otherwise I want the common features like "inurl:" (instead of full text), file types for files, "*" anywhere for "whatever", quotes for literal, + for required, the works.
Background: I have a garbled filename "Catedral_de_Skálholt,_Suðurland,_Islandia,_2014-08-16,_DD_142.JPG" on my disk (downloaded from commons for a review), and now I tried to find the corresponding "File:Catedral_de_Sk*.jpg" again, miserable FAIL for the abomination claiming to be a search engine.
